Automatic fire-sprinkler



(No Model.)

O. W. KERSTETER. AUTOMATIC FIRE SPRINKLER.

No. 498,661. I Patented May 30,1893.

UNITED STATES PATENT OFFICE.

CHARLES WV. KERSTETER, OF CHICAGO, ILLINOIS.

AUTOMATIC FIRE-SPRINKLER.

SPECIFICATION forming part of Letters Patent No. 498,661, dated May 30,1893.

I Application filed May 10, 1892. Serial No. 432,459. (No model.)

provements in Automatic Fire-Sprinklers, of

which the following is a specification.

My invention relates to improvements in automatic fire sprinklers ofthat class in which a valve-disk is held in position to close the outletor orifices of a nozzle by means of a brace, one side of which iscomposed of two or more pieces united together with a solder fusible ata low degree of temperature, whereby the valve-disk is released when theheat in the apartment where the sprinkler is situated becomes sufficientto fuse the solder, and the water issuing from the nozzle is dischargedagainst a deflector or distributing plate and sprayed for some distancearound.

With these ends in view, myinvention consists in the peculiarconstruction and arrangement of parts, as will be hereinafter fullypointed out and claimed.

1n the accompanying drawings-Figu re 1 is a side elevation of myimproved sprinkler. Fig. 2 is an elevationpartially in section, and Fig.3 is a plan view.

Like letters of reference denote corresponding parts in the severalfigures of the drawings, referring to which- A designates a nozzle tothe orifice or outlet of which is fitted a valve-disk B. The valve-diskI3 is preferably made cone shape to prevent it from moving in its seatand to always bring the same center to bear upon the nozzle.

The upper end of the nozzle is screwed through a suitable threadedpassage or aperture formed in a yoke frame 0 and on the upper end ofsaid yoke is rigidly secured a deflector or distributing plate E.

The valve-disk B is held in position on the nozzle A by means of a braceD which is arranged within the yoke C and has one side composedof two ormore pieces united together by low degree fusing solder. The sectionalside of the brace D is made longer than the other sides thereof and oneend thereof fits into a recess or socket formed in the upper side of thevalve-disk B and its other while the other sectional member of said I Ibrace extends so that if the longer solid side were extended until itintersected the said sectional member a right angled triangle would beformed. The sectional side of the brace is arranged at an angle toavertical line drawn through theaxis of the valve-disk and the 7 bearingbetween the solid part of the brace and the yoke, as shown; and thus theupper end of said sectional side of the brace bears against a horizontalupper arm of' the solid part D at one side of said vertical line drawnthrough the axis of the valve-disk and the bearing between the yoke andbrace, while the lower end of said sectional side bears directly on thevalve-disk; the lower end of the solid part D of the brace havingcontact with the sectional side of the brace at a point above thebearing between the sectionalside and the valve-disk. As beforestatedone end of the sectional member of the brace D fits in a socketformed in the valve-disk B and in one of the solid members of said braceis formed a notch or recess into which the upper portion of the yoke Cfits and holds the brace firmly in place.

The,operation and advantages of my improvements will be readilyunderstood and appreciated.

Having thus described my improvements,

what I claim as new, and desire to secure by Letters Patent, is-

1. In an automatic fire extinguisher, the

combination with a nozzle provided with a valve-disk, and a yokeattached to the nozzle and carrying a distributor or deflecting plate,of a brace arranged to bear against the yoke in the vertical axial lineof the valve-disk and having one side thereof composed of two or morepieces joined by a fusible connection, said sectional side of the bracebeing arranged in an inclined position to a vertical line drawn throughthe axis of the valve-disk and the bearing of the brace on the yoke, andthe lower end of said sectional side of the brace of the brace at oneside of a vertical line drawn through the axis of the valve-disk and [5the bearing between the upper solid part of the brace and the yoke, andthe lower end of said sectional side resting directly upon thevalve-disk and having contact, above said valve-disk, with the lower endof the solid 20 part of the brace, substantially as described.

-OI-IARLES W. KERSTETER.

Witnesses:

L. LODGE, A. W. JOHNSON.

